SK Hynix stock trades at 5 times earnings despite 257% revenue growth

SK Hynix just delivered one of the most impressive quarters in semiconductor history. Revenue surged 257% year-over-year to 79.3 trillion won. Operating profit exploded 557%. And the market’s response was to knock the stock down roughly 10%.

Record numbers, skeptical market

The South Korean memory chip maker reported Q2 2026 results on July 28-29 that would make most companies’ investor relations teams weep with joy. Revenue of 79.3 trillion won represented not just a 257% year-over-year jump but also a 51% sequential increase from the prior quarter. Operating profit hit 60.5 trillion won, up a staggering 557% compared to the same period last year.

Those numbers came up short, though. Analysts had penciled in revenue closer to 84 trillion won, and the miss sent shares sliding. Concerns about a slowdown in HBM4 shipments, the next generation of high-bandwidth memory critical for AI workloads, added fuel to the selling.

After the decline, SK Hynix traded at approximately 5 times next year’s expected earnings. For context, that’s the kind of multiple you’d typically see on a company facing existential questions about its business model, not one that just posted triple-digit revenue growth and controls roughly 58% of the global HBM revenue market.

The cyclical trap, explained

The wrinkle this time is artificial intelligence. HBM chips, SK Hynix’s crown jewel product, are essential components in the advanced GPUs and accelerators powering AI training and inference. Nvidia, the dominant buyer of HBM, has been consuming these chips at an extraordinary rate. SK Hynix is the leading supplier, and that relationship has driven much of the company’s revenue explosion.

Capex binge and analyst optimism

SK Hynix has outlined capital expenditure plans exceeding $31 billion for 2026, expanding fab capacity in South Korea to meet what it sees as durable demand for AI memory products.

The company crossed the $1 trillion market cap threshold earlier in 2026. Wall Street analysts remain broadly constructive. Consensus ratings lean toward Buy or Strong Buy, with average price targets implying 40% to 90% upside from current levels. One KRW-based consensus estimate suggested approximately 92% upside potential.

What the valuation signals

For SK Hynix specifically, the risk calculus centers on three factors. First, Nvidia concentration. When a significant portion of your revenue depends on one customer’s product cycle, any shift in that customer’s roadmap creates outsized risk. Second, memory pricing. HBM commands premium margins today, but competition from Samsung and Micron is intensifying. Third, the macro environment. Trade tensions, particularly between the US and China, add another layer of uncertainty for a company with global supply chain dependencies.

The counterargument is straightforward: AI infrastructure spending shows no signs of decelerating, HBM demand continues to outstrip supply, and SK Hynix’s 58% market share gives it pricing power that competitors can’t easily replicate.

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